On his first night as the new criminal profiler for the LAPD, Li Weien is thrust into a string of serial murders: prostitutes slashed open and arranged into human centipedes—pointing to a shadowy organization codenamed 'The Nightingale.' After three officers are suspended, they launch a desperate counterstrike—catching a mole red-handed at the West Pier. But the Nightingale's true identity remains hidden beneath the surface.
